Multi-label classification of promotions in digital leaflets using textual and visual information Roberto Arroyo author David Jiménez-Cabello author Javier Martínez-Cebrián author 2020-12 text Proceedings of Workshop on Natural Language Processing in E-Commerce Huasha Zhao editor Parikshit Sondhi editor Nguyen Bach editor Sanjika Hewavitharana editor Yifan He editor Luo Si editor Heng Ji editor Association for Computational Linguistics Barcelona, Spain conference publication arroyo-etal-2020-multi https://aclanthology.org/2020.ecomnlp-1.2/ 2020-12 11 20